Bruce Momjian wrote:
> On Sat, Oct 22, 2016 at 11:18:28PM +0300, Greg Stark wrote:
> > I think the apt-get behaviour was specifically designed to ensure it
> > couldn't easily be put into a script which I would have said was
> > desirable -- except I suspect there are situations where Postgres
> > database scripts need to do a resetxlog. I'm not sure I can think of
> > any examples offhand but I wouldn't be too surprised.
>
> Yes, pg_upgrade has eight calls to pg_resetxlog to set various value.
There is one difference though, which is that the really destructive
use of pg_resetxlog is the one that removes pg_xlog files. The other
uses that simply set flags in the control file are not as bad -- you can
simply go back to what the original value was. I think we would only
need the obnoxious string requirement in the most dangerous mode.
Alternatively, we could separate the tool in two different executables.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
